Tony’s Decision Making for Purchasing a Bike and Going for a Ride
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1.
a.Lucy’s current wealth is $ 100 000; the chances of getting off and not paying and the chances of paying the fine plus the court cost are both 50%
Utilities associated with the probabilities are:
The utility of getting off and not paying the fine considering the 0.5 probability is 100.
The utility of paying the fine considering the 0.5 probability is 50.
This contributes to a function 2y + x = 0, the graph drawn represents wealth in the y-axis and fine in the x-axis.
b.Lucy cannot be an expected utility maximize in this case. She is risk averse, she chooses to remain with her wealth rather than gamble and also chooses to pay the fine rather than go to court.
c.By the use of the prospect theory, losses and gains are evaluated considering the both cases; going to court and winning and going to court and losing. The valuation reference point is the current wealth of Lucy which is $100000. It is plotted on the y-axis against the gains and losses in the x-axis.
d.The feature that is responsible for Lucy rejecting the gamble in the prospect theory is the risk-averseness. She chooses to remain with what she has and would rather pay $500 fin than go to court and lose and pay $1000.
e.The functional form for the value function, 2y + x = 0 can be clearly used to explain Lucy’s case. With this functional form, the probabilities for gaining and losing are equal. It is clearly shown that any rise in the probability for winning the case in court increases Lucy’s utility and the more she tends to fulfill her choice of going to court.
2.
Utility measures the consumer preferences over the set of various goods and services. It is a representation of consumer satisfaction obtained from a good or a service. Considering the case of Tony, the utility cost associated with the bike purchase for period 0 is P which is given by u0 (Buy) = -P, the utility cost associated with going out for a ride for period 1 is E given by u1 (ride) = -E and the utility associated with the health benefit as a result of riding the bike for period 2 is B which is given by u2 (ride) = B.
a.When Tony does not discount future utility, considering the case when B > E+P, the choices that he will take for the periods 0 and 1 are:
- For period 0, Tony will choose to buy the bike at the utility units which equal to p.
- For period 1, Tony will choose to go out for a ride. The two choices are made due to the fact that the utility obtained from ridding the bike which is actually reflected by the health benefit is greater that both utility costs incurred for periods 1 and 2.
Considering the case where B < E + P, the choices that Tony will take for periods 1 and 2 are:
- For period 0, Tony will choose not to buy the bike.
- As a result of choice made in period 0, then it is obvious that Tony will not go for a ride. The choices are made due to the fact that overall utility obtained from the ride for period 2, B, is less that the utilities incurred in periods 0 and 1.
b.Yes, Tony will for any ? be expected to purchase the bike and not ride. This is due to the fact that the expected future utility reflected by the health benefit obtained from riding the bike may be greater in future as compared to the present time.
c.If ? = 2/3, P = 2, E = 4 and B = 8, Tony will not purchase a bike at period 0 and hence he will not go for a ride. This is due to the fact the utility cost incurred in periods 0 and 1 surpass the utility obtained in period 2.
d.Yes, it is possible that for some values of B, E and P, Tony buys the bike and then does not use it if he is a naïve quasi-hyperbolic discounter. This is due to the fact that the naifs falsely have a belief that today’s preferences will be maximized by the future selves. The naifs are unaware of their self-control problems.
e.Yes, it is possible that for some values of B, E and P, Tony buys the bike and then does not use it if he is a sophisticated quasi-hyperbolic discounters. Sophisticates have a β < 1. This means that they are time-inconsistent but are aware of the self-control problems and can correctly predict the future unlike the naifs. Therefore based on some values of B, E and P, they can predict the future and if it yields more utility compared to today, they can decide to have the ride in future.
f.The quasi-hyperbolic function is given by ut = ut + β(?ut+1 + ?2 ut +2+ ?3 ut+3 + …)? = 1, β = 1/3, P =2, E = 4, B = 8
At period 0, we have 1/3*(8-2) = 2 > 0, Tony is expecting to ride in period 1 since the utility to be achieved exceeds the utility costs.
At period 1, we have 1/3*(8-4) = 1.33 > 1, Tony is actually going to ride if he has bought the bike.
Tony is actually going to purchase the bike since the utility achieved (health benefits) from riding the bike exceeds the utility costs incurred in both periods 1 and 2.
3.
- A Nash equilibrium results when the both players chose mutually the best responses. Each player chooses the strategy which maximizes his or her utility in as much as the opponent’s strategies are concerned. The pure-strategy Nash equilibria with purely sel?sh preferences are the choice to work both (4, 4) or the choice to shirk both and fail (0, 0).
- Yes, there are other outcomes. The outcomes result to a mixed-strategy Nash equilibria. They are the choice to work and shirk (5, 1) and the choice to shirk and work (1, 5). This is due to the fact that no one is willing to incur the cost and obtain low marks just the same as the one who shirks but does not incur any cost.
- Under this situation, the students are cooperative. They may decide to both work together and obtain a good mark even if they incur costs or decide that one of them should do it and be compensated by the other. The Nash equilibria can either be a pure strategy one at (4, 4) or a mixed one at (1, 5) and (5, 1).
- In this situation, the Nash equilibria is a pure-strategy one at (4, 4) where the both students prefer to work hard and get a good mark. The competition effect stirs them up to work for the best as no one wants to be outdone by the other.
- The pure-strategy Nash equilibria will be (4, 4) and (0, 0). This is due to the fact that the difference in the each unit of payoffs makes the students to lose half a unit of utility. As each student aims at maximizing utility, no one is willing to lose half unit of utility due to difference in payoffs units and thus adopt similar payoff units.